Name the person who developed a table of elements which revealed regularities in elemental properties?

Name the person who developed a table of elements which revealed regularities in elemental properties?
by

1 Answer

Answer :

ANSWER: DMITRI MENDELEEV
by

Related questions

Name the person who developed a table of elements which revealed regularities in elemental properties in 1869? w) Theodore Richards x) Antoine Lavoisier y) Dmitri Mendeleev z) Svante Arrhenius

Description : Name the person who developed a table of elements which revealed regularities in elemental properties in 1869? w) Theodore Richards x) Antoine Lavoisier y) Dmitri Mendeleev z) Svante Arrhenius

Last Answer : ANSWER: Y -- DMITRI MENDELEEV

The fact that the spectrum of any element contains wavelengths that exhibit definite regularities was ` utilized in the second half of the _______in identifying different elements. a) 16th century b) 17th century c) 18th century d) 19th century

Description : The fact that the spectrum of any element contains wavelengths that exhibit definite regularities was ` utilized in the second half of the _______in identifying different elements. a) 16th century b) 17th century c) 18th century d) 19th century

Last Answer : d) 19th century

(2) it is lighter than air Explanation: Helium is the second lightest element and is the second most abundant element in the observable universe, being present at about 24% of the total elemental mass, which is more than 12 times the mass of all the heavier elements combined. A well-known but minor use is as a lifting gas in balloons and airships

Description : (2) it is lighter than air Explanation: Helium is the second lightest element and is the second most abundant element in the observable universe, being present at about 24% of the total elemental mass ... elements combined. A well-known but minor use is as a lifting gas in balloons and airships

Last Answer : Ammonial is a mixture of – (1) aluminium powder and ammonium nitrate (2) aluminium powder and ammonium chloride (3) aluminium powder and ammonium sulphate (4) aluminium powder and potassium nitrate

A 45-year-old solicitor had an onset of severe, crushing, substernal chest pain while attending a football match. He collapsed on his way to the car. Bystander Cardiorespiratory Resuscitation was begun immediately and continued until arrival in Casualty where an endotracheal tube was inserted and ventilation was maintained on 100% oxygen. Investigations revealed: pH 7.13 PaO2 560 mmHg PaCO2 18 mmHg Bicarbonate 5.8 SaO2 98% Based on these laboratory values, which of the following statements best describes his current pathophysiology? 1) He is demonstrating a primary respiratory alkalosis 2) He probably developed a large right to left intracardiac shunt 3) His anion gap is probably normal 4) His oxyhemoglobin curve is shifted to the left 5) His pulmonary artery pressure is probably elevated

Description : A 45-year-old solicitor had an onset of severe, crushing, substernal chest pain while attending a football match. He collapsed on his way to the car. Bystander Cardiorespiratory Resuscitation ... His oxyhemoglobin curve is shifted to the left 5) His pulmonary artery pressure is probably elevated

Last Answer : Answers-5 This young patient with severe central chest pain has probably arrested due to myocardial infarction and arrhythmia. His gases reveal high PO2 following 100% O2 but severe acidosis ... no left to right shunting and high pulmonary pressures would be expected after this arrest scenario.

How many elemental symbols have been taken from Latin names so far ?

Description : How many elemental symbols have been taken from Latin names so far ?

Last Answer : So far the symbol of the ten elements has been taken from the Latin name.

What is the oxidation number of an atom in the elemental state?

Description : What is the oxidation number of an atom in the elemental state?

Last Answer : Ans.zero

(a) What are ‘groups’ and ‘periods’ in the ‘periodic table’? (b) Two elements M and N belong to group I and II respectively and are in the same period of the periodic table. How do the following properties of M and N vary? Sizes of their atoms Their metallic characters Their valencies in forming oxides Molecular formulae of their chlorides -Science

Description : (a) What are groups' and periods' in the periodic table'? (b) Two elements M and N belong to group I and II respectively and are in the same period of the periodic ... Sizes of their atoms Their metallic characters Their valencies in forming oxides Molecular formulae of their chlorides -Science

Last Answer : (a) The vertical columns in the periodic table are called groups'. The horizontal rows in the periodic table are called periods'. (b) M' and N' belong to same period but group I ... oxides. Valency goes on increasing first and then decreases. MCI, NCI2 are molecular formulae of their chlorides.

a) What is meant by periodicity in properties of elements with reference to the periodic table? (b) Why do all the elements of the same group have similar properties? (c) How will the tendency to gain electrons change as we go from left to right across a period? Why? -Science

Description : a) What is meant by periodicity in properties of elements with reference to the periodic table? (b) Why do all the elements of the same group have similar properties? (c) How will the tendency to gain electrons change as we go from left to right across a period? Why? -Science

Last Answer : (a) The repetition of same properties after definite interval is called periodicity in properties. (b) It is because they have same valence electrons therefore, have similar properties. (c) ... to right in a period because atomic size goes on decreasing and effective nuclear charge increases.

What two elements in the periodic table have properties in common with Calcium?

Description : What two elements in the periodic table have properties in common with Calcium?

Last Answer : Be, Mg, Ca, Sr, Ba, Ra. All the elements in that column haveproperties similar to each other.

What groups of elements should have very different chemical properties in the periodic table?

Description : What groups of elements should have very different chemical properties in the periodic table?

Last Answer : Feel Free to Answer

Iron which resembles Cobalt and Nickel in properties has been placed far away from these elements. This was one of the limitations of : (1) Modern periodic table (2) Newland's law of octaves (3) Dobereiner's triads (4) Mendeleev's periodic table

Description : Iron which resembles Cobalt and Nickel in properties has been placed far away from these elements. This was one of the limitations of : (1) Modern periodic table (2) Newland's law of octaves (3) Dobereiner's triads (4) Mendeleev's periodic table

Last Answer : (2) Newland's law of octaves Explanation: Among the major limitations of Newlands Law of Octaves, some similar elements have been separated from one another while some dissimilar elements have been placed in the same column.

What is elemental metabolism ?

Description : What is elemental metabolism ?

Last Answer : When we are at rest , our external organs are not working but involuntary muscles , lungs , heart are working. As a result, energy is expended. This spent energy is called fundamental energy.

Which is the heaviest elemental gas ?

Description : Which is the heaviest elemental gas ?

Last Answer : Radon is the heaviest elemental gas.

Which elemental metal is liquid at normal temperature ?

Description : Which elemental metal is liquid at normal temperature ?

Last Answer : Mercury is liquid at normal temperature.

Which elemental non-metal is liquid at normal temperature ?

Description : Which elemental non-metal is liquid at normal temperature ?

Last Answer : Bromine is liquid at normal temperature.

Which elemental non-metal is liquid at normal temperature ?

Last Answer : Bromine is a basic non-metallic liquid at normal temperatures.

Assertion: Reaction of `SO_(2)` and `H_(2)S` in the presence of `Fe_(2)O_(3)` catalyst gives elemental sulphur. Reason: `SO_(2)` is a reducing agent.

Description : Assertion: Reaction of `SO_(2)` and `H_(2)S` in the presence of `Fe_(2)O_(3)` catalyst gives elemental sulphur. Reason: `SO_(2)` is a reducing agent.

Last Answer : Assertion: Reaction of `SO_(2)` and `H_(2)S` in the presence of `Fe_(2)O_(3)` catalyst gives ... is False. D. If both Assertion & Reason are False.

How many electrons are in an atom of elemental sodium equal to?

Description : How many electrons are in an atom of elemental sodium equal to?

Last Answer : The number of electrons in a neutral atom is equal to the atomic number; sodium has 11 electrons. The number of protons is the same.

How many electrons are in an atom of elemental sodium?

Description : How many electrons are in an atom of elemental sodium?

Last Answer : The neutral atom of sodium has 11 electrons.

How many electrons are in an atom of elemental sodium equal to?

Description : How many electrons are in an atom of elemental sodium equal to?

Last Answer : The number of electrons in a neutral atom is equal to the atomic number; sodium has 11 electrons. The number of protons is the same.

How many electrons are in an atom of elemental sodium?

Description : How many electrons are in an atom of elemental sodium?

Last Answer : The neutral atom of sodium has 11 electrons.

When an elemental metal combines with an elemental nonmetal it forms a A covalent compound B binary ionic compound C double salt D polar covalent compound?

Description : When an elemental metal combines with an elemental nonmetal it forms a A covalent compound B binary ionic compound C double salt D polar covalent compound?

Last Answer : Ghh

Sulphur can be utilized by bacteria in the form of a. Organic compounds b. Inorganic compounds c. Elemental compounds d. All of the above

Description : Sulphur can be utilized by bacteria in the form of a. Organic compounds b. Inorganic compounds c. Elemental compounds d. All of the above

Last Answer : Ans: A

Which of the following is not an example of elemental solid dielectric? a) Diamond b) Sulphur c) Silicon d) Germanium

Description : Which of the following is not an example of elemental solid dielectric? a) Diamond b) Sulphur c) Silicon d) Germanium

Last Answer : c) Silicon

Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C. (A) 250-300 (B) 500-750 (C) 950-1050 (D) 1400-1450

Description : Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C. (A) 250-300 (B) 500-750 (C) 950-1050 (D) 1400-1450

Last Answer : (D) 1400-1450

Yield of elemental phosphorous from rock phosphate is about __________ percent. (A) 1-2 (B) 15-25 (C) 40-45 (D) 60-65

Description : Yield of elemental phosphorous from rock phosphate is about __________ percent. (A) 1-2 (B) 15-25 (C) 40-45 (D) 60-65

Last Answer : (B) 15-25

The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is (A) Alumina (B) Silica gel(C) Platinum(D) Nickel

Description : The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is (A) Alumina (B) Silica gel (C) Platinum (D) Nickel

Last Answer : (A) Alumina

In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed: (A) Furnace → converter → absorber (B) Furnace → evaporator → absorber (C) Furnace → converter → evaporator (D) Converter → furnace → absorber

Description : In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed: (A) Furnace → converter → absorber (B) Furnace → evaporator → absorber (C) Furnace → converter → evaporator (D) Converter → furnace → absorber

Last Answer : (A) Furnace → converter → absorber

Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to (A) Shear force (B) Area of the section (C) Distance of the C.G. of the area from its neutral axis (D) Moment of the beam section about its neutral axis

Description : Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to (A) Shear force (B) Area of the section ... . of the area from its neutral axis (D) Moment of the beam section about its neutral axis

Last Answer : Answer: Option D

_________ is the grand total of all energies inside a substance.  a. Internal Energy  b. Grand Energy  c. Atomic Energy  d. Elemental Energy

Description : _________ is the grand total of all energies inside a substance.  a. Internal Energy  b. Grand Energy  c. Atomic Energy  d. Elemental Energy

Last Answer : Internal Energy

The ICH guidelines which deal with Impurities: Guidelines for Elemental Impurities are A. ICH Q3A B. ICH Q3B C. ICH Q3C D. ICH Q3D

Description : The ICH guidelines which deal with Impurities: Guidelines for Elemental Impurities are A. ICH Q3A B. ICH Q3B C. ICH Q3C D. ICH Q3D

Last Answer : D. ICH Q3D

The daily dose of elemental iron for maximal haemopoietic response in an anaemic adult is: A. 30 mg B. 100 mg C. 200 mg D. 500 mg

Description : The daily dose of elemental iron for maximal haemopoietic response in an anaemic adult is: A. 30 mg B. 100 mg C. 200 mg D. 500 mg

Last Answer : C. 200 mg

he percentage of elemental iron in hydrated ferrous sulfate is: A. 5% B. 10% C. 20% D. 33%

Description : he percentage of elemental iron in hydrated ferrous sulfate is: A. 5% B. 10% C. 20% D. 33%

Last Answer : C. 20%

Which personal form of text-based media is often revealed after a person dies?

Description : Which personal form of text-based media is often revealed after a person dies?

Last Answer : A diary

What are transition elements? (1) Elements whose two outermost shells are incomplete (2) Elements which possess properties of both, metals and non-metals (3) They have eight electrons in the outermost shell (4) Elements whose three outermost shells are incomplete

Description : What are transition elements? (1) Elements whose two outermost shells are incomplete (2) Elements which possess properties of both, metals and non-metals (3) They have eight electrons in the outermost shell (4) Elements whose three outermost shells are incomplete

Last Answer : (1) Elements whose two outermost shells are incomplete

Which one of the following best defines the word “allotropes”? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between those of metals and nonmetals D Atoms of a given atomic number that have a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Description : Which one of the following best defines the word allotropes ? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between ... a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Last Answer : A Different structural forms of an element 

In the second and third stages of the periodic table, after how many elements does religion repeat ?

Description : In the second and third stages of the periodic table, after how many elements does religion repeat ?

Last Answer : In the case of the second and third stages of the periodic table, religion repeats itself after the eight elements.

What is a Periodic Table of Elements ?

Description : What is a Periodic Table of Elements ?

Last Answer : By classifying the elements of the same type of religion in the same category , replacing all the discovered elements , the current table of elements is called the periodic table of elements.

In the periodic table of elements, on moving from left to right across a period, the atomic radius – (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

Description : In the periodic table of elements, on moving from left to right across a period, the atomic radius – (1) decreases (2) increases (3) remains unchanged (4) does not follow a definite pattern

Last Answer : (1) decreases Explanation: The atomic radius is the distance from the atomic nucleus to the outermost stable electron orbital in an atom that is at equilibrium. It tends to decrease across a period from ... usually increases while going down a group due to the addition of a new energy level (shell).

Newlands' table, the elements were placed with the halogens - (1) Mn and As (2) Fe and Se (3) Ce and La (4) Co and Ni

Description : Newlands' table, the elements were placed with the halogens - (1) Mn and As (2) Fe and Se (3) Ce and La (4) Co and Ni

Last Answer : (4) Co and Ni Explanation: Newlands' Law of Octaves suffered from lot of limitations, In order to fit elements into his table, Newlands ad justed two elements in the same slot, but also put some unlike elements under the same note.

Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic Table? (1) Scandium (2) Gallium (3) Titanium (4) Germanium

Description : Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic Table? (1) Scandium (2) Gallium (3) Titanium (4) Germanium

Last Answer : (2) Gallium

Elements present in the 2nd Group of the Periodic Table are also called ?

Description : Elements present in the 2nd Group of the Periodic Table are also called ?

Last Answer : Ans alkaline earth metals

Name the elements present in the 2nd Group of the Periodic Table:

Description : Name the elements present in the 2nd Group of the Periodic Table:

Last Answer : Ans beryllium, magnesium, calcium, strontium, barium and radium

Why are isotopes not considered in Mendeleev’s periodic table?Name the elements which are predicted by Mendeleev as eka –silicon and eka –aluminum

Description : Why are isotopes not considered in Mendeleev’s periodic table?Name the elements which are predicted by Mendeleev as eka –silicon and eka –aluminum

Last Answer : Ans.Because Mendeleev gave priority to similarities in properties. Germanium and gallium

Explain the Mendeleev’s Law of classification of elements also describe advantages & disadvantages of his periodic table.

Description : Explain the Mendeleev’s Law of classification of elements also describe advantages & disadvantages of his periodic table.

Last Answer : Ans : Mendeleeve's Law of Classification : Mendeleeve in 1869 arrange elements in order of increasing atomic masses. He placed chemically similar elements vertically beneath each other & concluded that : The ... metals. No Idea Of Atomic Structure : It failed to give the idea of atomic structure.

Which group elements show very low ionization enthalpy in the periodic table?

Description : Which group elements show very low ionization enthalpy in the periodic table?

Last Answer : First group elements (alkali metals) 

Name the elements present in the 2nd Group of the Periodic Table:

Description : Name the elements present in the 2nd Group of the Periodic Table: 

Last Answer : beryllium, magnesium, calcium, strontium, barium and radium. These elements with the exception of beryllium are commonly known as the alkaline earth metals. 

Name the elements present in the 1st Group of the Periodic Table

Description : Name the elements present in the 1st Group of the Periodic Table 

Last Answer :  lithium, sodium, potassium, rubidium, caesium and francium. They are collectively known as the alkali metals.